Home / 105,491.04-145,576.08-57,743.16

Finding the Fourth Proportional to 105,491.04, 145,576.08 and 57,743.16

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Solution

The fourth proportional to 105,491.04, 145,576.08 and 57,743.16 is: 79,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,491.04 : 145,576.08 = 57,743.16 : x
  2. Step 2: Convert to fraction form
    105,491.04/145,576.08 = 57,743.16/x
  3. Step 3: Cross multiply
    105,491.04x = 145,576.08 × 57,743.16
  4. Step 4: Simplify right side
    105,491.04x = 8,406,022,879.61
  5. Step 5: Solve for x
    x = 8,406,022,879.61/105,491.04
  6. Step 6: Final answer
    x = 79,684.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.